intel: tools: split memory management out of aubinator

Signed-off-by: Lionel Landwerlin <[email protected]>
Reviewed-by: Rafael Antognolli <[email protected]>

4 files changed, 491 insertions, 353 deletions

diff --git a/src/intel/tools/aub_mem.c b/src/intel/tools/aub_mem.c
new file mode 100644
index 00000000000..92484272906
--- /dev/null
+++ b/src/intel/tools/aub_mem.c
@@ -0,0 +1,391 @@
+/*
+ * Copyright © 2016-2018 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+
+#include "aub_mem.h"
+
+#ifndef HAVE_MEMFD_CREATE
+#include <sys/syscall.h>
+
+static inline int
+memfd_create(const char *name, unsigned int flags)
+{
+   return syscall(SYS_memfd_create, name, flags);
+}
+#endif
+
+struct bo_map {
+   struct list_head link;
+   struct gen_batch_decode_bo bo;
+   bool unmap_after_use;
+};
+
+struct ggtt_entry {
+   struct rb_node node;
+   uint64_t virt_addr;
+   uint64_t phys_addr;
+};
+
+struct phys_mem {
+   struct rb_node node;
+   uint64_t fd_offset;
+   uint64_t phys_addr;
+   uint8_t *data;
+};
+
+static void
+add_gtt_bo_map(struct aub_mem *mem, struct gen_batch_decode_bo bo, bool unmap_after_use)
+{
+   struct bo_map *m = calloc(1, sizeof(*m));
+
+   m->bo = bo;
+   m->unmap_after_use = unmap_after_use;
+   list_add(&m->link, &mem->maps);
+}
+
+void
+aub_mem_clear_bo_maps(struct aub_mem *mem)
+{
+   list_for_each_entry_safe(struct bo_map, i, &mem->maps, link) {
+      if (i->unmap_after_use)
+         munmap((void *)i->bo.map, i->bo.size);
+      list_del(&i->link);
+      free(i);
+   }
+}
+
+static inline struct ggtt_entry *
+ggtt_entry_next(struct ggtt_entry *entry)
+{
+   if (!entry)
+      return NULL;
+   struct rb_node *node = rb_node_next(&entry->node);
+   if (!node)
+      return NULL;
+   return rb_node_data(struct ggtt_entry, node, node);
+}
+
+static inline int
+cmp_uint64(uint64_t a, uint64_t b)
+{
+   if (a < b)
+      return -1;
+   if (a > b)
+      return 1;
+   return 0;
+}
+
+static inline int
+cmp_ggtt_entry(const struct rb_node *node, const void *addr)
+{
+   struct ggtt_entry *entry = rb_node_data(struct ggtt_entry, node, node);
+   return cmp_uint64(entry->virt_addr, *(const uint64_t *)addr);
+}
+
+static struct ggtt_entry *
+ensure_ggtt_entry(struct aub_mem *mem, uint64_t virt_addr)
+{
+   struct rb_node *node = rb_tree_search_sloppy(&mem->ggtt, &virt_addr,
+                                                cmp_ggtt_entry);
+   int cmp = 0;
+   if (!node || (cmp = cmp_ggtt_entry(node, &virt_addr))) {
+      struct ggtt_entry *new_entry = calloc(1, sizeof(*new_entry));
+      new_entry->virt_addr = virt_addr;
+      rb_tree_insert_at(&mem->ggtt, node, &new_entry->node, cmp > 0);
+      node = &new_entry->node;
+   }
+
+   return rb_node_data(struct ggtt_entry, node, node);
+}
+
+static struct ggtt_entry *
+search_ggtt_entry(struct aub_mem *mem, uint64_t virt_addr)
+{
+   virt_addr &= ~0xfff;
+
+   struct rb_node *node = rb_tree_search(&mem->ggtt, &virt_addr, cmp_ggtt_entry);
+
+   if (!node)
+      return NULL;
+
+   return rb_node_data(struct ggtt_entry, node, node);
+}
+
+static inline int
+cmp_phys_mem(const struct rb_node *node, const void *addr)
+{
+   struct phys_mem *mem = rb_node_data(struct phys_mem, node, node);
+   return cmp_uint64(mem->phys_addr, *(uint64_t *)addr);
+}
+
+static struct phys_mem *
+ensure_phys_mem(struct aub_mem *mem, uint64_t phys_addr)
+{
+   struct rb_node *node = rb_tree_search_sloppy(&mem->mem, &phys_addr, cmp_phys_mem);
+   int cmp = 0;
+   if (!node || (cmp = cmp_phys_mem(node, &phys_addr))) {
+      struct phys_mem *new_mem = calloc(1, sizeof(*new_mem));
+      new_mem->phys_addr = phys_addr;
+      new_mem->fd_offset = mem->mem_fd_len;
+
+      MAYBE_UNUSED int ftruncate_res = ftruncate(mem->mem_fd, mem->mem_fd_len += 4096);
+      assert(ftruncate_res == 0);
+
+      new_mem->data = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED,
+                           mem->mem_fd, new_mem->fd_offset);
+      assert(new_mem->data != MAP_FAILED);
+
+      rb_tree_insert_at(&mem->mem, node, &new_mem->node, cmp > 0);
+      node = &new_mem->node;
+   }
+
+   return rb_node_data(struct phys_mem, node, node);
+}
+
+static struct phys_mem *
+search_phys_mem(struct aub_mem *mem, uint64_t phys_addr)
+{
+   phys_addr &= ~0xfff;
+
+   struct rb_node *node = rb_tree_search(&mem->mem, &phys_addr, cmp_phys_mem);
+
+   if (!node)
+      return NULL;
+
+   return rb_node_data(struct phys_mem, node, node);
+}
+
+void
+aub_mem_local_write(void *_mem, uint64_t address,
+                    const void *data, uint32_t size)
+{
+   struct aub_mem *mem = _mem;
+   struct gen_batch_decode_bo bo = {
+      .map = data,
+      .addr = address,
+      .size = size,
+   };
+   add_gtt_bo_map(mem, bo, false);
+}
+
+void
+aub_mem_ggtt_entry_write(void *_mem, uint64_t address,
+                         const void *_data, uint32_t _size)
+{
+   struct aub_mem *mem = _mem;
+   uint64_t virt_addr = (address / sizeof(uint64_t)) << 12;
+   const uint64_t *data = _data;
+   size_t size = _size / sizeof(*data);
+   for (const uint64_t *entry = data;
+        entry < data + size;
+        entry++, virt_addr += 4096) {
+      struct ggtt_entry *pt = ensure_ggtt_entry(mem, virt_addr);
+      pt->phys_addr = *entry;
+   }
+}
+
+void
+aub_mem_phys_write(void *_mem, uint64_t phys_address,
+                   const void *data, uint32_t size)
+{
+   struct aub_mem *mem = _mem;
+   uint32_t to_write = size;
+   for (uint64_t page = phys_address & ~0xfff; page < phys_address + size; page += 4096) {
+      struct phys_mem *pmem = ensure_phys_mem(mem, page);
+      uint64_t offset = MAX2(page, phys_address) - page;
+      uint32_t size_this_page = MIN2(to_write, 4096 - offset);
+      to_write -= size_this_page;
+      memcpy(pmem->data + offset, data, size_this_page);
+      data = (const uint8_t *)data + size_this_page;
+   }
+}
+
+void
+aub_mem_ggtt_write(void *_mem, uint64_t virt_address,
+                   const void *data, uint32_t size)
+{
+   struct aub_mem *mem = _mem;
+   uint32_t to_write = size;
+   for (uint64_t page = virt_address & ~0xfff; page < virt_address + size; page += 4096) {
+      struct ggtt_entry *entry = search_ggtt_entry(mem, page);
+      assert(entry && entry->phys_addr & 0x1);
+
+      uint64_t offset = MAX2(page, virt_address) - page;
+      uint32_t size_this_page = MIN2(to_write, 4096 - offset);
+      to_write -= size_this_page;
+
+      uint64_t phys_page = entry->phys_addr & ~0xfff; /* Clear the validity bits. */
+      aub_mem_phys_write(mem, phys_page + offset, data, size_this_page);
+      data = (const uint8_t *)data + size_this_page;
+   }
+}
+
+struct gen_batch_decode_bo
+aub_mem_get_ggtt_bo(void *_mem, uint64_t address)
+{
+   struct aub_mem *mem = _mem;
+   struct gen_batch_decode_bo bo = {0};
+
+   list_for_each_entry(struct bo_map, i, &mem->maps, link)
+      if (i->bo.addr <= address && i->bo.addr + i->bo.size > address)
+         return i->bo;
+
+   address &= ~0xfff;
+
+   struct ggtt_entry *start =
+      (struct ggtt_entry *)rb_tree_search_sloppy(&mem->ggtt, &address,
+                                                 cmp_ggtt_entry);
+   if (start && start->virt_addr < address)
+      start = ggtt_entry_next(start);
+   if (!start)
+      return bo;
+
+   struct ggtt_entry *last = start;
+   for (struct ggtt_entry *i = ggtt_entry_next(last);
+        i && last->virt_addr + 4096 == i->virt_addr;
+        last = i, i = ggtt_entry_next(last))
+      ;
+
+   bo.addr = MIN2(address, start->virt_addr);
+   bo.size = last->virt_addr - bo.addr + 4096;
+   bo.map = mmap(NULL, bo.size, PROT_READ, MAP_SHARED | MAP_ANONYMOUS, -1, 0);
+   assert(bo.map != MAP_FAILED);
+
+   for (struct ggtt_entry *i = start;
+        i;
+        i = i == last ? NULL : ggtt_entry_next(i)) {
+      uint64_t phys_addr = i->phys_addr & ~0xfff;
+      struct phys_mem *phys_mem = search_phys_mem(mem, phys_addr);
+
+      if (!phys_mem)
+         continue;
+
+      uint32_t map_offset = i->virt_addr - address;
+      void *res = mmap((uint8_t *)bo.map + map_offset, 4096, PROT_READ,
+                       MAP_SHARED | MAP_FIXED, mem->mem_fd, phys_mem->fd_offset);
+      assert(res != MAP_FAILED);
+   }
+
+   add_gtt_bo_map(mem, bo, true);
+
+   return bo;
+}
+
+static struct phys_mem *
+ppgtt_walk(struct aub_mem *mem, uint64_t pml4, uint64_t address)
+{
+   uint64_t shift = 39;
+   uint64_t addr = pml4;
+   for (int level = 4; level > 0; level--) {
+      struct phys_mem *table = search_phys_mem(mem, addr);
+      if (!table)
+         return NULL;
+      int index = (address >> shift) & 0x1ff;
+      uint64_t entry = ((uint64_t *)table->data)[index];
+      if (!(entry & 1))
+         return NULL;
+      addr = entry & ~0xfff;
+      shift -= 9;
+   }
+   return search_phys_mem(mem, addr);
+}
+
+static bool
+ppgtt_mapped(struct aub_mem *mem, uint64_t pml4, uint64_t address)
+{
+   return ppgtt_walk(mem, pml4, address) != NULL;
+}
+
+struct gen_batch_decode_bo
+aub_mem_get_ppgtt_bo(void *_mem, uint64_t address)
+{
+   struct aub_mem *mem = _mem;
+   struct gen_batch_decode_bo bo = {0};
+
+   address &= ~0xfff;
+
+   if (!ppgtt_mapped(mem, mem->pml4, address))
+      return bo;
+
+   /* Map everything until the first gap since we don't know how much the
+    * decoder actually needs.
+    */
+   uint64_t end = address;
+   while (ppgtt_mapped(mem, mem->pml4, end))
+      end += 4096;
+
+   bo.addr = address;
+   bo.size = end - address;
+   bo.map = mmap(NULL, bo.size, PROT_READ, MAP_SHARED | MAP_ANONYMOUS, -1, 0);
+   assert(bo.map != MAP_FAILED);
+
+   for (uint64_t page = address; page < end; page += 4096) {
+      struct phys_mem *phys_mem = ppgtt_walk(mem, mem->pml4, page);
+
+      void *res = mmap((uint8_t *)bo.map + (page - bo.addr), 4096, PROT_READ,
+                       MAP_SHARED | MAP_FIXED, mem->mem_fd, phys_mem->fd_offset);
+      assert(res != MAP_FAILED);
+   }
+
+   add_gtt_bo_map(mem, bo, true);
+
+   return bo;
+}
+
+bool
+aub_mem_init(struct aub_mem *mem)
+{
+   memset(mem, 0, sizeof(*mem));
+
+   list_inithead(&mem->maps);
+
+   mem->mem_fd = memfd_create("phys memory", 0);
+
+   return mem->mem_fd != -1;
+}
+
+void
+aub_mem_fini(struct aub_mem *mem)
+{
+   if (mem->mem_fd == -1)
+      return;
+
+   aub_mem_clear_bo_maps(mem);
+
+
+   rb_tree_foreach_safe(struct ggtt_entry, entry, &mem->ggtt, node) {
+      rb_tree_remove(&mem->ggtt, &entry->node);
+      free(entry);
+   }
+   rb_tree_foreach_safe(struct phys_mem, entry, &mem->mem, node) {
+      rb_tree_remove(&mem->mem, &entry->node);
+      free(entry);
+   }
+
+   close(mem->mem_fd);
+   mem->mem_fd = -1;
+}
diff --git a/src/intel/tools/aub_mem.h b/src/intel/tools/aub_mem.h
new file mode 100644
index 00000000000..98e64214b98
--- /dev/null
+++ b/src/intel/tools/aub_mem.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright © 2018 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#ifndef INTEL_AUB_MEM
+#define INTEL_AUB_MEM
+
+#include <stdint.h>
+
+#include "util/list.h"
+#include "util/rb_tree.h"
+
+#include "dev/gen_device_info.h"
+#include "common/gen_decoder.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct aub_mem {
+   uint64_t pml4;
+
+   int mem_fd;
+   off_t mem_fd_len;
+
+   struct list_head maps;
+   struct rb_tree ggtt;
+   struct rb_tree mem;
+};
+
+bool aub_mem_init(struct aub_mem *mem);
+void aub_mem_fini(struct aub_mem *mem);
+
+void aub_mem_clear_bo_maps(struct aub_mem *mem);
+
+void aub_mem_phys_write(void *mem, uint64_t virt_address,
+                        const void *data, uint32_t size);
+void aub_mem_ggtt_write(void *mem, uint64_t virt_address,
+                        const void *data, uint32_t size);
+void aub_mem_ggtt_entry_write(void *mem, uint64_t virt_address,
+                              const void *data, uint32_t size);
+void aub_mem_local_write(void *mem, uint64_t virt_address,
+                         const void *data, uint32_t size);
+
+struct gen_batch_decode_bo aub_mem_get_ggtt_bo(void *mem, uint64_t address);
+struct gen_batch_decode_bo aub_mem_get_ppgtt_bo(void *mem, uint64_t address);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* INTEL_AUB_MEM */
diff --git a/src/intel/tools/aubinator.c b/src/intel/tools/aubinator.c
index 27ce0cef4dc..374ed46f864 100644
--- a/src/intel/tools/aubinator.c
+++ b/src/intel/tools/aubinator.c
@@ -38,29 +38,11 @@
 #include <sys/wait.h>
 #include <sys/mman.h>
 
-#include "util/list.h"
 #include "util/macros.h"
-#include "util/rb_tree.h"
 
 #include "common/gen_decoder.h"
-#include "intel_aub.h"
 #include "aub_read.h"
-
-#ifndef HAVE_MEMFD_CREATE
-#include <sys/syscall.h>
-
-static inline int
-memfd_create(const char *name, unsigned int flags)
-{
-   return syscall(SYS_memfd_create, name, flags);
-}
-#endif
-
-/* Below is the only command missing from intel_aub.h in libdrm
- * So, reuse intel_aub.h from libdrm and #define the
- * AUB_MI_BATCH_BUFFER_END as below
- */
-#define AUB_MI_BATCH_BUFFER_END (0x0500 << 16)
+#include "aub_mem.h"
 
 #define CSI "\e["
 #define BLUE_HEADER  CSI "0;44m"
@@ -80,327 +62,13 @@ uint16_t pci_id = 0;
 char *input_file = NULL, *xml_path = NULL;
 struct gen_device_info devinfo;
 struct gen_batch_decode_ctx batch_ctx;
-
-struct bo_map {
-   struct list_head link;
-   struct gen_batch_decode_bo bo;
-   bool unmap_after_use;
-};
-
-struct ggtt_entry {
-   struct rb_node node;
-   uint64_t virt_addr;
-   uint64_t phys_addr;
-};
-
-struct phys_mem {
-   struct rb_node node;
-   uint64_t fd_offset;
-   uint64_t phys_addr;
-   uint8_t *data;
-};
-
-static struct list_head maps;
-static struct rb_tree ggtt = {NULL};
-static struct rb_tree mem = {NULL};
-int mem_fd = -1;
-off_t mem_fd_len = 0;
+struct aub_mem mem;
 
 FILE *outfile;
 
 struct brw_instruction;
 
 static void
-add_gtt_bo_map(struct gen_batch_decode_bo bo, bool unmap_after_use)
-{
-   struct bo_map *m = calloc(1, sizeof(*m));
-
-   m->bo = bo;
-   m->unmap_after_use = unmap_after_use;
-   list_add(&m->link, &maps);
-}
-
-static void
-clear_bo_maps(void)
-{
-   list_for_each_entry_safe(struct bo_map, i, &maps, link) {
-      if (i->unmap_after_use)
-         munmap((void *)i->bo.map, i->bo.size);
-      list_del(&i->link);
-      free(i);
-   }
-}
-
-static inline struct ggtt_entry *
-ggtt_entry_next(struct ggtt_entry *entry)
-{
-   if (!entry)
-      return NULL;
-   struct rb_node *node = rb_node_next(&entry->node);
-   if (!node)
-      return NULL;
-   return rb_node_data(struct ggtt_entry, node, node);
-}
-
-static inline int
-cmp_uint64(uint64_t a, uint64_t b)
-{
-   if (a < b)
-      return -1;
-   if (a > b)
-      return 1;
-   return 0;
-}
-
-static inline int
-cmp_ggtt_entry(const struct rb_node *node, const void *addr)
-{
-   struct ggtt_entry *entry = rb_node_data(struct ggtt_entry, node, node);
-   return cmp_uint64(entry->virt_addr, *(const uint64_t *)addr);
-}
-
-static struct ggtt_entry *
-ensure_ggtt_entry(struct rb_tree *tree, uint64_t virt_addr)
-{
-   struct rb_node *node = rb_tree_search_sloppy(&ggtt, &virt_addr,
-                                                cmp_ggtt_entry);
-   int cmp = 0;
-   if (!node || (cmp = cmp_ggtt_entry(node, &virt_addr))) {
-      struct ggtt_entry *new_entry = calloc(1, sizeof(*new_entry));
-      new_entry->virt_addr = virt_addr;
-      rb_tree_insert_at(&ggtt, node, &new_entry->node, cmp > 0);
-      node = &new_entry->node;
-   }
-
-   return rb_node_data(struct ggtt_entry, node, node);
-}
-
-static struct ggtt_entry *
-search_ggtt_entry(uint64_t virt_addr)
-{
-   virt_addr &= ~0xfff;
-
-   struct rb_node *node = rb_tree_search(&ggtt, &virt_addr, cmp_ggtt_entry);
-
-   if (!node)
-      return NULL;
-
-   return rb_node_data(struct ggtt_entry, node, node);
-}
-
-static inline int
-cmp_phys_mem(const struct rb_node *node, const void *addr)
-{
-   struct phys_mem *mem = rb_node_data(struct phys_mem, node, node);
-   return cmp_uint64(mem->phys_addr, *(uint64_t *)addr);
-}
-
-static struct phys_mem *
-ensure_phys_mem(uint64_t phys_addr)
-{
-   struct rb_node *node = rb_tree_search_sloppy(&mem, &phys_addr, cmp_phys_mem);
-   int cmp = 0;
-   if (!node || (cmp = cmp_phys_mem(node, &phys_addr))) {
-      struct phys_mem *new_mem = calloc(1, sizeof(*new_mem));
-      new_mem->phys_addr = phys_addr;
-      new_mem->fd_offset = mem_fd_len;
-
-      MAYBE_UNUSED int ftruncate_res = ftruncate(mem_fd, mem_fd_len += 4096);
-      assert(ftruncate_res == 0);
-
-      new_mem->data = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED,
-                           mem_fd, new_mem->fd_offset);
-      assert(new_mem->data != MAP_FAILED);
-
-      rb_tree_insert_at(&mem, node, &new_mem->node, cmp > 0);
-      node = &new_mem->node;
-   }
-
-   return rb_node_data(struct phys_mem, node, node);
-}
-
-static struct phys_mem *
-search_phys_mem(uint64_t phys_addr)
-{
-   phys_addr &= ~0xfff;
-
-   struct rb_node *node = rb_tree_search(&mem, &phys_addr, cmp_phys_mem);
-
-   if (!node)
-      return NULL;
-
-   return rb_node_data(struct phys_mem, node, node);
-}
-
-static void
-handle_local_write(void *user_data, uint64_t address, const void *data, uint32_t size)
-{
-   struct gen_batch_decode_bo bo = {
-      .map = data,
-      .addr = address,
-      .size = size,
-   };
-   add_gtt_bo_map(bo, false);
-}
-
-static void
-handle_ggtt_entry_write(void *user_data, uint64_t address, const void *_data, uint32_t _size)
-{
-   uint64_t virt_addr = (address / sizeof(uint64_t)) << 12;
-   const uint64_t *data = _data;
-   size_t size = _size / sizeof(*data);
-   for (const uint64_t *entry = data;
-        entry < data + size;
-        entry++, virt_addr += 4096) {
-      struct ggtt_entry *pt = ensure_ggtt_entry(&ggtt, virt_addr);
-      pt->phys_addr = *entry;
-   }
-}
-
-static void
-handle_physical_write(void *user_data, uint64_t phys_address, const void *data, uint32_t size)
-{
-   uint32_t to_write = size;
-   for (uint64_t page = phys_address & ~0xfff; page < phys_address + size; page += 4096) {
-      struct phys_mem *mem = ensure_phys_mem(page);
-      uint64_t offset = MAX2(page, phys_address) - page;
-      uint32_t size_this_page = MIN2(to_write, 4096 - offset);
-      to_write -= size_this_page;
-      memcpy(mem->data + offset, data, size_this_page);
-      data = (const uint8_t *)data + size_this_page;
-   }
-}
-
-static void
-handle_ggtt_write(void *user_data, uint64_t virt_address, const void *data, uint32_t size)
-{
-   uint32_t to_write = size;
-   for (uint64_t page = virt_address & ~0xfff; page < virt_address + size; page += 4096) {
-      struct ggtt_entry *entry = search_ggtt_entry(page);
-      assert(entry && entry->phys_addr & 0x1);
-
-      uint64_t offset = MAX2(page, virt_address) - page;
-      uint32_t size_this_page = MIN2(to_write, 4096 - offset);
-      to_write -= size_this_page;
-
-      uint64_t phys_page = entry->phys_addr & ~0xfff; /* Clear the validity bits. */
-      handle_physical_write(user_data, phys_page + offset, data, size_this_page);
-      data = (const uint8_t *)data + size_this_page;
-   }
-}
-
-static struct gen_batch_decode_bo
-get_ggtt_batch_bo(void *user_data, uint64_t address)
-{
-   struct gen_batch_decode_bo bo = {0};
-
-   list_for_each_entry(struct bo_map, i, &maps, link)
-      if (i->bo.addr <= address && i->bo.addr + i->bo.size > address)
-         return i->bo;
-
-   address &= ~0xfff;
-
-   struct ggtt_entry *start =
-      (struct ggtt_entry *)rb_tree_search_sloppy(&ggtt, &address,
-                                                 cmp_ggtt_entry);
-   if (start && start->virt_addr < address)
-      start = ggtt_entry_next(start);
-   if (!start)
-      return bo;
-
-   struct ggtt_entry *last = start;
-   for (struct ggtt_entry *i = ggtt_entry_next(last);
-        i && last->virt_addr + 4096 == i->virt_addr;
-        last = i, i = ggtt_entry_next(last))
-      ;
-
-   bo.addr = MIN2(address, start->virt_addr);
-   bo.size = last->virt_addr - bo.addr + 4096;
-   bo.map = mmap(NULL, bo.size, PROT_READ, MAP_SHARED | MAP_ANONYMOUS, -1, 0);
-   assert(bo.map != MAP_FAILED);
-
-   for (struct ggtt_entry *i = start;
-        i;
-        i = i == last ? NULL : ggtt_entry_next(i)) {
-      uint64_t phys_addr = i->phys_addr & ~0xfff;
-      struct phys_mem *phys_mem = search_phys_mem(phys_addr);
-
-      if (!phys_mem)
-         continue;
-
-      uint32_t map_offset = i->virt_addr - address;
-      void *res = mmap((uint8_t *)bo.map + map_offset, 4096, PROT_READ,
-                       MAP_SHARED | MAP_FIXED, mem_fd, phys_mem->fd_offset);
-      assert(res != MAP_FAILED);
-   }
-
-   add_gtt_bo_map(bo, true);
-
-   return bo;
-}
-
-static struct phys_mem *
-ppgtt_walk(uint64_t pml4, uint64_t address)
-{
-   uint64_t shift = 39;
-   uint64_t addr = pml4;
-   for (int level = 4; level > 0; level--) {
-      struct phys_mem *table = search_phys_mem(addr);
-      if (!table)
-         return NULL;
-      int index = (address >> shift) & 0x1ff;
-      uint64_t entry = ((uint64_t *)table->data)[index];
-      if (!(entry & 1))
-         return NULL;
-      addr = entry & ~0xfff;
-      shift -= 9;
-   }
-   return search_phys_mem(addr);
-}
-
-static bool
-ppgtt_mapped(uint64_t pml4, uint64_t address)
-{
-   return ppgtt_walk(pml4, address) != NULL;
-}
-
-static struct gen_batch_decode_bo
-get_ppgtt_batch_bo(void *user_data, uint64_t address)
-{
-   struct gen_batch_decode_bo bo = {0};
-   uint64_t pml4 = *(uint64_t *)user_data;
-
-   address &= ~0xfff;
-
-   if (!ppgtt_mapped(pml4, address))
-      return bo;
-
-   /* Map everything until the first gap since we don't know how much the
-    * decoder actually needs.
-    */
-   uint64_t end = address;
-   while (ppgtt_mapped(pml4, end))
-      end += 4096;
-
-   bo.addr = address;
-   bo.size = end - address;
-   bo.map = mmap(NULL, bo.size, PROT_READ, MAP_SHARED | MAP_ANONYMOUS, -1, 0);
-   assert(bo.map != MAP_FAILED);
-
-   for (uint64_t page = address; page < end; page += 4096) {
-      struct phys_mem *phys_mem = ppgtt_walk(pml4, page);
-
-      void *res = mmap((uint8_t *)bo.map + (page - bo.addr), 4096, PROT_READ,
-                       MAP_SHARED | MAP_FIXED, mem_fd, phys_mem->fd_offset);
-      assert(res != MAP_FAILED);
-   }
-
-   add_gtt_bo_map(bo, true);
-
-   return bo;
-}
-
-static void
 aubinator_error(void *user_data, const void *aub_data, const char *msg)
 {
    fprintf(stderr, msg);
@@ -455,7 +123,7 @@ handle_execlist_write(void *user_data, enum gen_engine engine, uint64_t context_
 {
    const uint32_t pphwsp_size = 4096;
    uint32_t pphwsp_addr = context_descriptor & 0xfffff000;
-   struct gen_batch_decode_bo pphwsp_bo = get_ggtt_batch_bo(NULL, pphwsp_addr);
+   struct gen_batch_decode_bo pphwsp_bo = aub_mem_get_ggtt_bo(&mem, pphwsp_addr);
    uint32_t *context = (uint32_t *)((uint8_t *)pphwsp_bo.map +
                                     (pphwsp_addr - pphwsp_bo.addr) +
                                     pphwsp_size);
@@ -463,35 +131,37 @@ handle_execlist_write(void *user_data, enum gen_engine engine, uint64_t context_
    uint32_t ring_buffer_head = context[5];
    uint32_t ring_buffer_tail = context[7];
    uint32_t ring_buffer_start = context[9];
-   uint64_t pml4 = (uint64_t)context[49] << 32 | context[51];
 
-   struct gen_batch_decode_bo ring_bo = get_ggtt_batch_bo(NULL,
-                                                          ring_buffer_start);
+   mem.pml4 = (uint64_t)context[49] << 32 | context[51];
+   batch_ctx.user_data = &mem;
+
+   struct gen_batch_decode_bo ring_bo = aub_mem_get_ggtt_bo(&mem,
+                                                            ring_buffer_start);
    assert(ring_bo.size > 0);
    void *commands = (uint8_t *)ring_bo.map + (ring_buffer_start - ring_bo.addr);
 
    if (context_descriptor & 0x100 /* ppgtt */) {
-      batch_ctx.get_bo = get_ppgtt_batch_bo;
-      batch_ctx.user_data = &pml4;
+      batch_ctx.get_bo = aub_mem_get_ppgtt_bo;
    } else {
-      batch_ctx.get_bo = get_ggtt_batch_bo;
+      batch_ctx.get_bo = aub_mem_get_ggtt_bo;
    }
 
    (void)engine; /* TODO */
    gen_print_batch(&batch_ctx, commands, ring_buffer_tail - ring_buffer_head,
                    0);
-   clear_bo_maps();
+   aub_mem_clear_bo_maps(&mem);
 }
 
 static void
 handle_ring_write(void *user_data, enum gen_engine engine,
                   const void *data, uint32_t data_len)
 {
-   batch_ctx.get_bo = get_ggtt_batch_bo;
+   batch_ctx.user_data = &mem;
+   batch_ctx.get_bo = aub_mem_get_ggtt_bo;
 
    gen_print_batch(&batch_ctx, data, data_len, 0);
 
-   clear_bo_maps();
+   aub_mem_clear_bo_maps(&mem);
 }
 
 struct aub_file {
@@ -656,20 +326,23 @@ int main(int argc, char *argv[])
    if (isatty(1) && pager)
       setup_pager();
 
-   mem_fd = memfd_create("phys memory", 0);
-
-   list_inithead(&maps);
+   if (!aub_mem_init(&mem)) {
+      fprintf(stderr, "Unable to create GTT\n");
+      exit(EXIT_FAILURE);
+   }
 
    file = aub_file_open(input_file);
 
    struct aub_read aub_read = {
-      .user_data = NULL,
+      .user_data = &mem,
       .error = aubinator_error,
       .info = aubinator_init,
-      .local_write = handle_local_write,
-      .phys_write = handle_physical_write,
-      .ggtt_write = handle_ggtt_write,
-      .ggtt_entry_write = handle_ggtt_entry_write,
+
+      .local_write = aub_mem_local_write,
+      .phys_write = aub_mem_phys_write,
+      .ggtt_write = aub_mem_ggtt_write,
+      .ggtt_entry_write = aub_mem_ggtt_entry_write,
+
       .execlist_write = handle_execlist_write,
       .ring_write = handle_ring_write,
    };
@@ -680,6 +353,8 @@ int main(int argc, char *argv[])
       file->cursor += consumed;
    }
 
+   aub_mem_fini(&mem);
+
    fflush(stdout);
    /* close the stdout which is opened to write the output */
    close(1);
diff --git a/src/intel/tools/meson.build b/src/intel/tools/meson.build
index 660d87f455d..d749a80afed 100644
--- a/src/intel/tools/meson.build
+++ b/src/intel/tools/meson.build
@@ -20,7 +20,7 @@
 
 aubinator = executable(
   'aubinator',
-  files('aubinator.c', 'intel_aub.h', 'aub_read.h', 'aub_read.c'),
+  files('aubinator.c', 'intel_aub.h', 'aub_read.h', 'aub_read.c', 'aub_mem.h', 'aub_mem.c'),
   dependencies : [dep_expat, dep_zlib, dep_dl, dep_thread, dep_m],
   include_directories : [inc_common, inc_intel],
   link_with : [libintel_common, libintel_compiler, libintel_dev, libmesa_util],